Extruder Screw Barrel Suddenly Does Not Turn The Reason

In the extrusion process, there may be Extruder Screw Barrel suddenly stuck
does not turn the phenomenon. At this point, if the extruder protection device
does not play a role, the operator should immediately stop. More is the screw
can also turn, but the speed slowed down, Extruder Screw Barrel while the
emergence of harsh metal scraping the sound, the current rose sharply, then the
operator should immediately stop.

The reason for this is:

1: foreign body into the barrel, stuck screw, Extruder Screw Barrel if it
is iron metal foreign body, the screw and the barrel will cause great damage

2: screw or barrel deformation

3: the barrel temperature is too low, or the filter plate is blocked,
causing the barrel pressure rises sharply, resulting in screw deformation

4: screw, barrel design is unreasonable, Extruder Screw Barrel prone to the
situation is the screw design compression ratio is too large, in the use of
screw deformation. '

5: The thermal expansion coefficient of the material used for the barrel
and the screw is too large. Extruder Screw Barrel When the heating is heated,
the barrel is cooled and the screw may be locked if it is not cooled.